I have pain in the center of stomach it happens anytime of day for a year but it's not all the days.causes hot flashes, feel like fainting at sometime?

Visit a doc/GI spec: I am sorry about your stomach pains. The symptoms that you are describes can be any number of things. You need to speak with a doc who can take a full history and physical exam (Abdominal, and Pelvic exam), with labs to help narrow down the issue. This might require the services of a GI specialist or an OB/Gyn because it could involve your stomach, pancreas, intestine, ovaries, uterus.